title: Funcallable AMOP
date: 2023-07-22
layout: post
lang: en
ref: funcallable-amop
Using macrolet to allow a funcallable-standard-class to be invoked without
using funcall directly, and let the macroexpansion do that instead:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23 | #!/usr/bin/env li
(asdf:load-system :closer-mop)
(defclass constructor ()
((name :initarg :name :accessor constructor-name))
(:metaclass closer-mop:funcallable-standard-class))
(defmethod initialize-instance :after ((c constructor) &key)
(with-slots (name) c
(closer-mop:set-funcallable-instance-function
c
(lambda (x)
(format t "~s: ~s - ~s~%" name :funcalled x)))))
(let ((c (make-instance 'constructor :name "the-name")))
(funcall c 1))
(let ((c (make-instance 'constructor :name "the-name")))
(macrolet ((c (&body body)
`(funcall c ,@body)))
(funcall c 2)
(c 3)))
|
